Seeed Studio ReSpeaker Lite

The Seeed Studio ReSpeaker Lite is a compact audio development board specifically designed for voice control and voice processing. With its powerful XMOS XU316 sound and audio chip, it offers advanced features such as noise suppression, echo cancellation, and interference suppression, enabling precise voice recordings even in noisy environments. The integrated dual-microphone array technology captures voices from up to three meters away, making it perfect for applications like voice assistants or smart home devices. The board features USB and I2S interfaces, is compatible with various platforms like Raspberry Pi and XIAO ESP32S3, and supports audio processing without additional hardware. With the programmable RGB LED, you can add visual effects to your project. Additionally, the ReSpeaker Lite is easy to install and ready to use immediately, making it an ideal choice for rapid prototypes or DIY projects.

Recommended Accessories:

• Seeed Studio XIAO ESP32 S3
• 5W 4Ohm Speaker in Plastic Housing

Features:

• Powerful Audio Chip: The XMOS XU316 enables highly precise voice processing and recording.
• Dual-Microphone Array: Two microphones capture clear voice signals from up to 3 meters away.
• Noise and Echo Suppression: Advanced algorithms for improved voice quality in noisy environments.
• Versatile Interfaces: Supports USB and I2S for flexible connections with various devices.
• Programmable RGB LED: The WS2812 LED allows customization of visual effects.
• External Power Supply: Optional external 5V input for extended application possibilities.

Use Cases:

• Voice Assistants: Perfect for use in home assistants like Alexa or Google Home.
• Smart Home Devices: Use the ReSpeaker Lite for voice-controlled smart home integrations.
• Voice-Controlled Robots: Give your robots clear and precise voice control.
• DIY Audio Projects: Ideal for your own projects for voice processing or audio recording.
• Prototyping: Quickly and easily set it up for prototypes or audio applications.

Board Overview:

1. Dual-Microphone Array: Provides high-quality audio input.
2. Power Indicator: Lights up when the device is powered on.
3. RGB Light: Programmable WS2812 LED, provides a visual interface.
4. Mute Indicator: Lights up red when the mute button is pressed.
5. USR Button: Customizable button.
6. Mute Button: Mutes the audio input when pressed.
7. XIAO ESP32S3 (optional): For further development and integration.
8. XU316 Core Processor: Responsible for audio processing and transmission.
9. Solder Pad for External Power Supply: Supports external 5V power supply.
10. USB Type-C Connector: Used for power supply and data transmission.
11. Speaker Connector: For audio output. Supports 5W amplifier speakers.
12. 3.5mm Headphone Jack: Audio output. Active speakers or headphones can be connected.
13. External Power Pad 1: Unused IO pins on the XIAO ESP32.
14. External Power Pad 2: Unused IO pins on the XU316.
15. JTAG: For debugging and programming the XU316.

Documentation: 

• Seeedstudio Wiki

Technical Data:

• Manufacturer: Seeedstudio 
• Manufacturer SKU: 107990273
• Chip: XMOS XU316 AI sound and audio chip
• Microphones: 2 digital high-performance microphones
• Sensitivity: -26 dBFS
• Acoustic overload point: 120 dB
• SNR: 64 dBA
• Power Supply: USB 5V or external 5V input
• Audio Output: Speaker connector / 3.5mm headphone jack
• Maximum Sample Rate: 16 kHz
• Dimensions: 35 x 86 x 9.4 mm
• Weight: 21g

Package Contents:

• 1x Seeed Studio ReSpeaker Lite